monop/getinp.c

   1 /*      $NetBSD: getinp.c,v 1.10 2003/01/06 13:04:55 wiz Exp $  */
   2
   3 /*
   4  * Copyright (c) 1980, 1993
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. All advertising materials mentioning features or use of this software
  16  *    must display the following acknowledgement:
  17  *      This product includes software developed by the University of
  18  *      California, Berkeley and its contributors.
  19  * 4. Neither the name of the University nor the names of its contributors
  20  *    may be used to endorse or promote products derived from this software
  21  *    without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  */
  35
  36 #include <sys/cdefs.h>
  37 #ifndef lint
  38 #if 0
  39 static char sccsid[] = "@(#)getinp.c    8.1 (Berkeley) 5/31/93";
  40 #else
  41 __RCSID("$NetBSD: getinp.c,v 1.10 2003/01/06 13:04:55 wiz Exp $");
  42 #endif
  43 #endif /* not lint */
  44
  45 #include <stdio.h>
  46 #include <string.h>
  47 #include <ctype.h>
  48 #include "monop.ext"
  49
  50 #define LINE    70
  51
  52 static char     buf[257];
  53
  54 static int comp __P((const char *));
  55
  56 int
  57 getinp(prompt, list)
  58         const char *prompt, *const list[];
  59 {
  60         int i, n_match, match = 0;
  61         char *sp;
  62         int c;
  63
  64         for (;;) {
  65 inter:
  66                 printf("%s", prompt);
  67                 for (sp = buf; (c=getchar()) != '\n'; ) {
  68                         *sp = c;
  69                         if (c == -1)    /* check for interrupted system call */
  70                                 goto inter;
  71                         else if (sp != buf || *sp != ' ')
  72                                 sp++;
  73                 }
  74                 *sp = c;
  75                 if (buf[0] == '?' && buf[1] == '\n') {
  76                         printf("Valid inputs are: ");
  77                         for (i = 0, match = 18; list[i]; i++) {
  78                                 if ((match+=(n_match=strlen(list[i]))) > LINE) {
  79                                         printf("\n\t");
  80                                         match = n_match + 8;
  81                                 }
  82                                 if (*list[i] == '\0') {
  83                                         match += 8;
  84                                         printf("<RETURN>");
  85                                 }
  86                                 else
  87                                         printf("%s", list[i]);
  88                                 if (list[i+1])
  89                                         printf(", ");
  90                                 else
  91                                         putchar('\n');
  92                                 match += 2;
  93                         }
  94                         continue;
  95                 }
  96                 *sp = '\0';
  97                 for (sp = buf; *sp; sp++)
  98                         if (isupper(*sp))
  99                                 *sp = tolower(*sp);
 100                 for (i = n_match = 0; list[i]; i++)
 101                         if (comp(list[i])) {
 102                                 n_match++;
 103                                 match = i;
 104                         }
 105                 if (n_match == 1)
 106                         return match;
 107                 else if (buf[0] != '\0')
 108                         printf("Illegal response: \"%s\".  "
 109                             "Use '?' to get list of valid answers\n", buf);
 110         }
 111 }
 112
 113 static int
 114 comp(s1)
 115         const char *s1;
 116 {
 117         const char *sp, *tsp;
 118         char c;
 119
 120         if (buf[0] != '\0')
 121                 for (sp = buf, tsp = s1; *sp; ) {
 122                         c = isupper(*tsp) ? tolower(*tsp) : *tsp;
 123                         tsp++;
 124                         if (c != *sp++)
 125                                 return 0;
 126                 }
 127         else if (*s1 != '\0')
 128                 return 0;
 129         return 1;
 130 }